More than 57,000 people signed a petition against the scheme. Planners at the Loch Lomond and the Trossachs National Park Authority have advised that it should be refused. It had “not demonstrated that there will be no adverse impacts on the area’s character or integrity”.

A final decision will be made by the board of the park authority after a public hearing on September 24.

Ross Greer, the Green MSP, said that the planning advice was a “monumental victory”. Andy Miller, director of Lomond Banks, said he was disappointed by the ruling but hoped that the board might grant permission.